CN221127053U - Bottom double air inlet type ventilation structure of brushless DC motor - Google Patents
Bottom double air inlet type ventilation structure of brushless DC motor Download PDFInfo
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- CN221127053U CN221127053U CN202323109755.9U CN202323109755U CN221127053U CN 221127053 U CN221127053 U CN 221127053U CN 202323109755 U CN202323109755 U CN 202323109755U CN 221127053 U CN221127053 U CN 221127053U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 29
- 230000001154 acute effect Effects 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 50
- 241000883990 Flabellum Species 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 206010053615 Thermal burn Diseases 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
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Abstract
The utility model provides a bottom double air inlet type ventilation structure of a brushless direct current motor, which comprises the following components: a motor shell and a motor bottom end cover; two ends of the side surface of the motor shell are respectively provided with a parallelogram type air inlet side window at the bottom of the motor shell and an air outlet of a centrifugal fan blade of the motor; the end cover at the bottom of the motor is provided with vortex fan blades taking bottom air inlet and side air inlet into account; the motor bottom end cover is arranged at one end of the motor shell, provided with the parallelogram type air inlet side window at the bottom of the motor shell, and the root of the outer edge of the vortex fan blade with bottom air inlet and side air inlet and the acute angle area of the parallelogram type air inlet side window at the bottom of the motor shell form a local cross-engagement structure. According to the utility model, through the local cross-engagement structure, perfect coupling of bottom vortex air inlet and side vortex air inlet of the brushless direct current motor can be realized, the air inlet capacity of the air inlet end of the brushless direct current motor is remarkably improved, and the ventilation and heat dissipation effects inside the brushless direct current motor are improved.
Description
Technical Field
The utility model relates to the field of motor structures, in particular to a bottom double air inlet type ventilation structure of a brushless direct current motor.
Background
At present, most of brushless motors are provided with holes on the rear end cover for natural air intake, vortex air is blown out from the front end cover, but because the belt pulley is arranged in front of the front end cover, hot air is easy to scald a belt or accelerate the aging of the belt, a plastic cover is generally added in front of the front end cover, the wind direction is changed, the air is extruded to the side part for output, the forward rotation ventilation and heat dissipation efficiency is further reduced by the method, and the general temperature rise of the motors of the ventilation and heat dissipation structures is higher. On this basis, part of the prior art adopts and is close to outer wall place air-out of front end housing motor casing, increase centrifugal flabellum in this position, adopt centrifugal air-out, the air intake still adopts trompil natural air inlet's mode, this kind of mode has avoided the easy scald belt of former ventilation mode or has accelerated the ageing problem of belt, also practiced thrift the plastics apron of scald preventing belt, but because the increase of ventilation ability, natural air inlet comes not, easily because the inside negative pressure that forms of motor cavity structure, the rotational speed is higher, produce the squeaking sound easily when pressure differential is great (application number 201910844062.3's chinese patent, disclosed this motor structure). Still some prior art has further optimized patent application number 201910844062.3 structure, has changed rear end cover natural air inlet into axial flow air inlet or vortex air inlet (the chinese patent of application number 201820489299.5, has disclosed this motor structure), has optimized air intake structure, changes natural air inlet into forced air inlet to realize the push-pull structure of business turn over wind, promoted ventilation radiating efficiency, reduced the inside pressure difference when the motor is higher speed is rotatory, eliminated the whistle when the motor is higher speed is rotatory.
However, the ventilation structure of the existing brushless motor still has the problem that the air inlet efficiency of the independent bottom is low, the air inlet capacity needs to be further improved, and the ventilation and heat dissipation efficiency needs to be further improved.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model aims to provide a bottom double air inlet type ventilation structure of a brushless direct current motor.
The utility model provides a bottom double air inlet type ventilation structure of a brushless direct current motor, which comprises the following components: a motor shell and a motor bottom end cover;
Two ends of the side surface of the motor shell are respectively provided with a parallelogram type air inlet side window at the bottom of the motor shell and an air outlet of a centrifugal fan blade of the motor;
The end cover at the bottom of the motor is provided with vortex fan blades taking bottom air inlet and side air inlet into account;
The motor bottom end cover is installed the motor housing sets up the one end of motor housing bottom parallelogram type air inlet side window, take into account the outside root of the vortex flabellum of bottom air inlet and lateral part air inlet with the acute angle region of motor housing bottom parallelogram type air inlet side window forms local cross-engaging structure.
Preferably, the parallelogram type air inlet side window at the bottom of the motor shell is provided with a parallelogram type window structure formed by surrounding a reinforcing arc of the parallelogram type air inlet side window at the bottom of the motor shell and an annular outer circle at the bottom of the motor shell;
The motor housing bottom parallelogram type air inlet side window reinforcing arc is arranged between adjacent motor housing bottom parallelogram type air inlet side windows.
Preferably, the parallelogram type air inlet side window reinforcing arc at the bottom of the motor shell comprises: a lower reinforcing arc of the parallelogram type air inlet side window at the bottom of the motor shell and an upper reinforcing arc of the parallelogram type air inlet side window at the bottom of the motor shell;
The motor shell bottom parallelogram type air inlet side window is characterized in that the two sides of the motor shell bottom parallelogram type air inlet side window are respectively provided with a lower reinforcing arc and an upper reinforcing arc of the motor shell bottom parallelogram type air inlet side window, and the lower reinforcing arc of the motor shell bottom parallelogram type air inlet side window and the upper reinforcing arc of the motor shell bottom parallelogram type air inlet side window are connected with the annular outer circle of the motor shell bottom.
Preferably, a plurality of parallelogram-shaped air inlet side windows at the bottom of the motor shell and the vortex fan blades giving consideration to bottom air inlet and side air inlet are arranged and have the same quantity;
The end face of the air inlet formed between the adjacent vortex blades taking bottom air inlet and side air inlet into consideration is in a parallelogram opposite to the parallelogram type air inlet side window at the bottom of the motor shell.
Preferably, the outer ring of the motor bottom end cover is provided with a motor bottom end cover annular reinforcing rib, the root of the vortex fan blade giving consideration to bottom air inlet and side air inlet is provided with a motor bottom end cover fan blade root reinforcing rib, and a bottom air inlet is formed between the motor bottom end cover fan blade root reinforcing ribs.
Preferably, when the vortex fan blade giving consideration to the bottom air inlet and the side air inlet rotates, a bottom air inlet low-pressure area is formed at the bottom air inlet, a bottom air inlet and side air inlet sharing area high-pressure area is formed at the reinforcing arc part on the parallelogram type air inlet side window at the bottom of the motor shell, and air flows from the bottom air inlet low-pressure area to the bottom air inlet and side air inlet sharing area high-pressure area.
Preferably, the anti-escape structure is formed by the reinforcing arc under the parallelogram type air inlet side window at the bottom of the motor shell and the intersection area of the vortex fan blade giving consideration to the bottom air inlet and the side air inlet.
Preferably, a motor bottom end cover main shaft hole is formed in the middle of the motor bottom end cover, a main shaft is installed in the motor shell, and one end of the main shaft penetrates through the motor bottom end cover main shaft hole.
Preferably, a motor bottom end cover bearing hole is formed in the middle of one side of the motor bottom end cover, which faces the motor shell.
Preferably, a preset riveting interface of the motor bottom end cover is arranged on the motor bottom end cover and is riveted with the motor shell through the preset riveting interface of the motor bottom end cover.
Compared with the prior art, the utility model has the following beneficial effects:
1. The bottom end cover vortex blade page is designed by adopting a specific modeling radian and heightening blade surface height to give consideration to the vortex air inlet capability of the bottom vortex air inlet and the vortex air inlet capability of the side surface, so that a bottom double air inlet blade structure is provided;
2. The application opens parallelogram windows which are as many as the vortex fan blades on the outer wall of the end face of the outer shell of the brushless direct current motor near the bottom, the overall shape of the parallelogram is opposite to the shape of an air inlet formed on the side face of the vortex fan blades, and a side air inlet window which is matched with the bottom end cover is provided;
3. According to the application, when the designed bottom end cover is fixed to the bottom of the brushless direct current motor shell, a local cross-engagement structure is formed between the acute angle area of the parallelogram air inlet area on the side surface of the bottom of the motor shell and the root of the outer edge of the vortex fan blade;
4. The double air inlet type ventilation structure solves the problem of bottom air inlet side escape from a low-pressure area of an air inlet window at the side part of the motor when vortex air is introduced into the bottom air inlet of the end cover, the bottom air inlet is forced to be guided to a high-pressure area of a shared area of the bottom air inlet and the side air inlet, all the air inlets are forced to flow out from an air outlet of a centrifugal fan blade of the motor after passing through the inside of the motor, and perfect coupling of the vortex air inlet at the bottom of the motor and the vortex air inlet at the side part of the motor is realized.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of a brushless DC motor;
FIG. 2 is a schematic view of a motor bottom end cap structure;
FIG. 3 is a schematic view of a fan blade;
FIG. 4 is a schematic diagram of airflow direction;
FIG. 5 is a schematic view of a parallelogram type air intake side window structure;
the figure shows:
Detailed Description
The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.
Example 1
The embodiment provides a bottom double air inlet type ventilation structure of a brushless direct current motor, and the design can realize perfect coupling of vortex air inlet at the bottom of the brushless direct current motor and vortex air inlet at the side part, so that the air inlet capacity of an air inlet end of the brushless direct current motor is remarkably improved, and the ventilation and heat dissipation effects inside the brushless direct current motor are improved. The vortex fan blade 215 (hereinafter referred to as vortex fan blade 215) with bottom air intake and side air intake adopts a specific modeling radian when in blade surface design (the root of the vortex fan blade 215 with bottom air intake is outwards, the outer edge of the vortex fan blade 215 is outwards, and a corner is back hooked, and the back hooked structure can effectively solve the problem that the air intake in a high-pressure area is back-flushed and forced to be pressed into the motor and the height of the blade surface is increased (the height of the blade surface is equal to or greater than the width of a parallelogram air intake side window 111 at the bottom of the motor shell, so that gaps are prevented from being formed, bottom air intake escape, the side gap area cannot perform vortex air intake, and the side air intake effect is reduced), so that the vortex air intake of the bottom vortex air intake and the side is taken into account. The bottom parallelogram type air inlet side window 111 of the motor housing is formed on the outer wall of the end face of the brushless direct current motor housing 1 close to the bottom and has the same number of the vortex blades 215 for bottom air inlet and side air inlet, the overall shape of the parallelogram is opposite to the shape of an air inlet formed by the side faces of the vortex blades 215 for bottom air inlet and side air inlet (as shown in fig. 5, the acute angle of the bottom parallelogram type air inlet side window 111 of the motor housing is left lower and right upper, and the acute angle of the shape of the air inlet formed by the side faces of the vortex blades 215 for bottom air inlet and side air inlet is left upper and right lower), namely, the acute angle of the parallelogram is directed to the circular ring combining part of the vortex blades and the motor bottom end cover 2, and the side air inlet window matched with the motor bottom end cover 2 is provided. According to the embodiment, the designed motor bottom end cover 2 is fixed to the bottom of the brushless direct current motor shell 1, the acute angle area of the parallelogram air inlet area on the side face of the bottom of the motor shell 1 and the outer edge root (the combination position of the vortex fan blade and the motor bottom end cover 2) of the vortex fan blade 215 taking both bottom air inlet and side air inlet form a local cross-engagement structure, an anti-escape structure (the air in the bottom air inlet low-pressure area 222 is easy to escape from the side window when converging towards the high-pressure area 221 in the shared area of the bottom air inlet and side air inlet) of the motor side air inlet is formed, and the reinforcing arc 114 under the parallelogram air inlet side window of the motor shell with the engagement structure just shields the bottom air inlet escape route, so that the bottom air inlet is effectively prevented from escaping from the side window of the shell, and the air is forced to the high-pressure area to be all air inlets are forced to be pressed into the inside of the motor due to the back hook shape of the outer edge of the fan blade), and perfect coupling of the vortex air inlet at the bottom of the motor and the side air inlet is effectively realized.
Specifically, as shown in fig. 1, the present embodiment includes: a motor housing 1 and a motor bottom end cover 2; two ends of the side surface of the motor shell 1 are respectively provided with a parallelogram-shaped air inlet side window 111 at the bottom of the motor shell and a centrifugal fan blade air outlet 121 of the motor; the motor bottom end cover 2 is provided with vortex fan blades 215 which give consideration to bottom air inlet and side air inlet; the motor bottom end cover 2 is arranged at one end of the motor housing 1, where the motor housing bottom parallelogram type air inlet side window 111 is arranged, and the outer edge root of the vortex fan blade 215 taking bottom air inlet and side air inlet into account and the acute angle area of the motor housing bottom parallelogram type air inlet side window 111 form a local cross-engagement structure. The bottom parallelogram type air inlet side window 111 of the motor shell and the vortex fan blades 215 taking both bottom air inlet and side air inlet are provided with a plurality of same quantity, and the end face of an air inlet formed between the adjacent vortex fan blades 215 taking both bottom air inlet and side air inlet is in a parallelogram shape opposite to the shape of the bottom parallelogram type air inlet side window 111 of the motor shell.
As shown in fig. 2 and 3, a motor bottom end cover main shaft hole 214 is formed in the middle of the motor bottom end cover 2, a main shaft is installed in the motor housing 1, and one end of the main shaft passes through the motor bottom end cover main shaft hole 214. The motor bottom end cap 2 is provided with a motor bottom end cap bearing hole 216 toward the middle of the side of the motor housing 1. The outer ring of the motor bottom end cover 2 is provided with a motor bottom end cover annular reinforcing rib 211, the root of the vortex fan blade 215 taking the bottom air inlet and the side air inlet into account is provided with a motor bottom end cover fan blade root reinforcing rib 212, and a bottom air inlet is formed between the motor bottom end cover fan blade root reinforcing ribs 212. The motor bottom end cover 2 is provided with a motor bottom end cover preset riveting interface 213 and is riveted with the motor shell 1 through the motor bottom end cover preset riveting interface 213.
The motor housing bottom parallelogram type air inlet side window 111 is arranged to be a parallelogram type window structure formed by surrounding a motor housing bottom parallelogram type air inlet side window reinforcing arc 112 and a motor housing bottom annular outer circle 113, and the motor housing bottom parallelogram type air inlet side window reinforcing arc 112 is arranged between adjacent motor housing bottom parallelogram type air inlet side windows 111.
As shown in fig. 4, the intersection area of the bottom parallelogram type air inlet side window lower reinforcing arc 114 of the motor housing and the vortex fan blade 215 which takes both bottom air inlet and side air inlet into account forms an escape-preventing structure. When the vortex fan blade 215 which takes both bottom air inlet and side air inlet rotates, a bottom air inlet low-pressure area 222 is formed at the bottom air inlet, a bottom air inlet and side air inlet shared area high-pressure area 221 is formed at the bottom air inlet and side air inlet shared area high-pressure area inside the reinforcing arc 115 on the parallelogram type air inlet side window at the bottom of the motor shell, and air flows from the bottom air inlet low-pressure area 222 to the bottom air inlet and side air inlet shared area high-pressure area 221.
As shown in fig. 5, the motor housing bottom parallelogram type air intake side window reinforcing arc 112 includes: a motor housing bottom parallelogram type air inlet side window lower reinforcing arc 114 and a motor housing bottom parallelogram type air inlet side window upper reinforcing arc 115; the motor housing bottom parallelogram type air inlet side window 111 is respectively provided with a motor housing bottom parallelogram type air inlet side window lower reinforcing arc 114 and a motor housing bottom parallelogram type air inlet side window upper reinforcing arc 115 at two sides, and the motor housing bottom parallelogram type air inlet side window lower reinforcing arc 114 and the motor housing bottom parallelogram type air inlet side window upper reinforcing arc 115 are connected with the motor housing bottom annular excircle 113.
Example 2
Example 2 is a preferred example of example 1.
As shown in fig. 1 to 5, the present embodiment is composed of a motor housing 1 and a motor bottom end cover 2. The integral ventilation window of the motor housing 1 comprises: a parallelogram-shaped air inlet side window 111 at the bottom of the motor shell and a motor centrifugal fan blade air outlet 121. The motor housing bottom parallelogram type air inlet side window 111 is composed of a motor housing bottom parallelogram type air inlet side window reinforcing arc 112 and a motor housing bottom annular outer circle 113, wherein the motor housing bottom parallelogram type air inlet side window reinforcing arc 112 is divided into a motor housing bottom parallelogram type air inlet side window lower reinforcing arc 114 and a motor housing bottom parallelogram type air inlet side window upper reinforcing arc 115. The motor bottom end cover 2 mainly comprises a motor bottom end cover annular reinforcing rib 211 and vortex blades 215 taking bottom air inlet and side air inlet into account, wherein the motor bottom end cover annular reinforcing rib 211 presets a motor bottom end cover preset rivet interface 213, and the vortex blades 215 taking bottom air inlet and side air inlet presets a motor bottom end cover blade root reinforcing rib 212. In addition, a motor bottom end cover main shaft hole 214 and a motor bottom end cover bearing hole 216 are preset in the central area of the motor bottom end cover 2.
According to the embodiment, the designed motor bottom end cover 2 is fixed to the bottom of the motor shell 1, the acute angle area of the air inlet area of the parallelogram type air inlet side window 111 at the bottom of the motor shell and the outer edge root of the vortex blade 215 taking both bottom air inlet and side air inlet into account form a local cross-engagement structure, a bottom air inlet low-pressure area 222 and a bottom air inlet and side air inlet sharing area high-pressure area 221 are formed, and the anti-escape structure from the vortex blade side upper corner 223 taking both bottom air inlet and side air inlet to the motor side air inlet window low-pressure area just forms the end cover bottom vortex air inlet, so that perfect coupling of motor bottom vortex air inlet and side vortex air inlet is effectively realized.
The processing procedure of this embodiment: 1. designing and opening a mold to produce a motor bottom end cover 2; 2. designing and processing a motor housing 1; 3. the motor bottom end cap 2 is fixed to the bottom of the motor housing 1 and riveted through a motor bottom end cap preset rivet interface 213.
The finally manufactured brushless direct current forms a local cross-engagement structure, the upper corners 223 of the side of the vortex fan blades just form an anti-escape structure from the end cover bottom vortex air inlet to the low-pressure area of the motor side air inlet window, the bottom air inlet is forced to be guided to the bottom air inlet and side air inlet sharing area high-pressure area 221, all air inlets are forced to flow out from the motor centrifugal fan blade air outlet 121 after passing through the inside of the motor, perfect coupling of the motor bottom vortex air inlet and the side vortex air inlet is effectively realized, thereby obviously improving the air inlet capacity of the air inlet end of the brushless direct current motor and the ventilation and heat dissipation effects of the inside of the brushless direct current motor.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the utility model and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. A bottom double air intake type ventilation structure of a brushless direct current motor, comprising: a motor shell (1) and a motor bottom end cover (2);
Two ends of the side surface of the motor shell (1) are respectively provided with a parallelogram type air inlet side window (111) at the bottom of the motor shell and an air outlet (121) of a centrifugal fan blade of the motor;
the motor bottom end cover (2) is provided with vortex fan blades (215) which give consideration to bottom air inlet and side air inlet;
the motor bottom end cover (2) is installed one end of motor housing (1) that sets up motor housing bottom parallelogram type air inlet side window (111), the outer root of edge root of vortex flabellum (215) that give consideration to bottom air inlet and lateral part air inlet with the acute angle region of motor housing bottom parallelogram type air inlet side window (111) forms local cross-engagement structure.
2. The bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 1, wherein: the motor shell bottom parallelogram type air inlet side window (111) is of a parallelogram type window structure formed by surrounding a motor shell bottom parallelogram type air inlet side window reinforcing arc (112) and a motor shell bottom annular excircle (113);
The motor housing bottom parallelogram type air inlet side window reinforcing arc (112) is arranged between adjacent motor housing bottom parallelogram type air inlet side windows (111).
3. The bottom double-air-intake ventilation structure of a brushless dc motor according to claim 2, wherein the motor housing bottom parallelogram-type air intake side window reinforcing arc (112) comprises: a lower reinforcing arc (114) of the parallelogram type air inlet side window at the bottom of the motor shell and an upper reinforcing arc (115) of the parallelogram type air inlet side window at the bottom of the motor shell;
The motor housing bottom parallelogram type air inlet side window (111) is characterized in that the motor housing bottom parallelogram type air inlet side window lower reinforcing arc (114) and the motor housing bottom parallelogram type air inlet side window upper reinforcing arc (115) are respectively arranged on two sides of the motor housing bottom parallelogram type air inlet side window, and the motor housing bottom parallelogram type air inlet side window lower reinforcing arc (114) and the motor housing bottom parallelogram type air inlet side window upper reinforcing arc (115) are connected with the motor housing bottom annular outer circle (113).
4. The bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 1, wherein: the bottom parallelogram type air inlet side window (111) of the motor shell and the vortex fan blades (215) giving consideration to bottom air inlet and side air inlet are provided with a plurality of same quantity;
the end face of the air inlet formed between the adjacent vortex fan blades (215) giving consideration to bottom air inlet and side air inlet is in a parallelogram opposite to the shape of the parallelogram type air inlet side window (111) at the bottom of the motor shell.
5. A bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 3, wherein: the motor bottom end cover (2) is provided with a motor bottom end cover annular reinforcing rib (211) on an outer ring, the root of a vortex fan blade (215) taking bottom air inlet and side air inlet into account is provided with a motor bottom end cover fan blade root reinforcing rib (212), and a bottom air inlet is formed between the motor bottom end cover fan blade root reinforcing ribs (212).
6. The bottom double air intake type ventilation structure of a brushless direct current motor according to claim 5, wherein: when the vortex fan blade (215) giving consideration to the bottom air inlet and the side air inlet rotates, a bottom air inlet low-pressure area (222) is formed at the bottom air inlet, a bottom air inlet and side air inlet sharing area high-pressure area (221) is formed inside the reinforcing arc (115) on the parallelogram air inlet side window at the bottom of the motor shell, and air flows from the bottom air inlet low-pressure area (222) to the bottom air inlet and side air inlet sharing area high-pressure area (221).
7. The bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 6, wherein: the intersection area of the reinforcing arc (114) under the parallelogram type air inlet side window at the bottom of the motor shell and the vortex fan blade (215) giving consideration to the bottom air inlet and the side air inlet forms an escape-preventing structure.
8. The bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 1, wherein: the middle part of the motor bottom end cover (2) is provided with a motor bottom end cover main shaft hole (214), a main shaft is arranged in the motor shell (1), and one end of the main shaft penetrates through the motor bottom end cover main shaft hole (214).
9. The bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 1, wherein: the middle part of one side of the motor bottom end cover (2) facing the motor shell (1) is provided with a motor bottom end cover bearing hole (216).
10. The bottom double air intake type ventilation structure of a brushless dc motor as claimed in claim 1, wherein: the motor bottom end cover (2) is provided with a motor bottom end cover preset riveting interface (213) and is riveted with the motor shell (1) through the motor bottom end cover preset riveting interface (213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323109755.9U CN221127053U (en) | 2023-11-16 | 2023-11-16 | Bottom double air inlet type ventilation structure of brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323109755.9U CN221127053U (en) | 2023-11-16 | 2023-11-16 | Bottom double air inlet type ventilation structure of brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221127053U true CN221127053U (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323109755.9U Active CN221127053U (en) | 2023-11-16 | 2023-11-16 | Bottom double air inlet type ventilation structure of brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221127053U (en) |
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2023
- 2023-11-16 CN CN202323109755.9U patent/CN221127053U/en active Active
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